Intshayelelo kwi-BDMAEE kunye nokusetyenziswa kwayo kwi-Soft Foam

I-N,N,N',N'-Tetramethylethylenediamine (BDMAEE)** sisixhobo esisetyenziswa kakhului-polyurethane catalystyaziwa ngokuguquguquka kwayo nokusebenza kwayo kakuhle ekuveliseni iintlobo ezahlukeneyo ze-polyurethane foams. Le khompawundi yendalo, enefomula yemolekyuli C6H16N2, idlala indima ebalulekileyo ekuveliseni i-polyurethane foams ethambileyo, esetyenziswa rhoqo kwifenitshala, kwiibhedi, kwiindawo zokuhlala zeemoto, nakwezinye izinto ezinxulumene nokuthuthuzela.

Iimpawu ze-BDMAEE

1. Ukusebenza kakuhle kweCatalytic: I-BDMAEE sisincedisi se-amine esisebenza kakuhle kakhulu, esincedisa ukusabela phakathi kwe-isocyanates kunye ne-polyols ukwenza i-polyurethane. Ukuqina kwayo okuqinileyo kukhawulezisa inkqubo yokwakheka kwe-polyurethane, kuqinisekisa ukusabela okukhawulezayo nokupheleleyo.

2. Ukuhambelana: I-BDMAEE iyahambelana noluhlu olubanzi lweefomyula ze-polyurethane. Ingasetyenziswa kunye nezinye izinto ezibangela ukuvuvukala ukulungisa iimpawu zefoam, ezinje ngoxinano, ubulukhuni, kunye nokuqina.

3. Ukuguquguquka: Le catalyst ineqondo lokubila eliphantsi, nto leyo eyenza ukuba ifaneleke ukusetyenziswa okufuna amaxesha okunyibilika ngokukhawuleza. Nangona kunjalo, oku kuguquguquka kufuna ukuphathwa ngononophelo ukunciphisa ukukhutshwa komoya nokuqinisekisa ukhuseleko ngexesha lenkqubo yokuvelisa.

4. Uzinzo lwe-Hydrolytic: I-BDMAEE yaziwa ngokuzinza kwayo kwe-hydrolytic okugqwesileyo, oko kuthetha ukuba ihlala isebenza nokuba kukho umswakama. Olu phawu luluncedo ngakumbi kwiindawo zokuvelisa ezifumileyo okanye kwiindawo apho i-foam inokuchatshazelwa kumswakama.

Umgaqo wokusetyenziswaI-BDMAEEkwiFoam ethambileyo

Ukuveliswa kwe-polyurethane foam ethambileyo kubandakanya ulungelelwaniso oluthambileyo lweempendulo zeekhemikhali kunye neenkqubo zomzimba. I-BDMAEE idlala indima ebalulekileyo ekufezekiseni iimpawu ze-foam ezifunekayo ngeendlela ezilandelayo:

1. I-Gelling Reaction: I-BDMAEE ivuselela i-gelling reaction phakathi kwe-polyol kunye ne-isocyanate components. Le reaction yenza i-urethane linkages enika isakhelo solwakhiwo lwe-foam. Isantya se-gelling reaction sichaphazela ngokuthe ngqo isakhiwo seseli ye-foam, ubuninzi, kunye neempawu zoomatshini.

2. Ukusabela Kokuvuthela: Ukongeza kwimpendulo ye-gelling, i-BDMAEE ikwakhuthaza impendulo yokuvuthela, apho amanzi asabela khona nge-isocyanate ukuvelisa igesi ye-carbon dioxide. Le gesi yenza amaqamza ngaphakathi kwi-polymer matrix, idala isakhiwo seseli se-foam. Ukulinganisela phakathi kwe-gelling kunye neempendulo zokuvuthela, eziphenjelelwa yi-BDMAEE, kubalulekile ekufezekiseni isakhiwo seseli esifanayo kunye nokuthamba okufunekayo.

3. Iimpawu zeFoam zokuLungisa kakuhle: Ngokulungisa uxinzelelo lwe-BDMAEE, abavelisi banokulawula amazinga okusabela, nto leyo echaphazela uxinano lwefoam, ukuthamba kwayo, kunye nokuqina kwayo. Umzekelo, uxinzelelo oluphezulu lwe-BDMAEE lunokubangela amaxesha okunyanga ngokukhawuleza kunye nezakhiwo zeeseli ezincinci, ngelixa uxinano oluphantsi lunokubangela amafoam athambileyo, athambileyo ngakumbi.

4. Uzinzo kunye nokungaguquguquki: Uzinzo lwe-hydrolytic lwe-BDMAEE luqinisekisa ukusebenza okulinganayo kwiibhetshi ezahlukeneyo ze-foam. Oku kuthembeka kubalulekile kwimveliso enkulu apho ukufana kweempawu ze-foam kubalulekile kwizicelo zokugqibela.

Isiphelo

I-BDMAEE sisikhuthazi esibalulekileyo ekuvelisweni kwefoam ethambileyo ye-polyurethane, enika ukusebenza kakuhle, ukuhambelana, kunye nozinzo. Amandla ayo okulinganisela ii-gelling kunye nee-blowing reactions avumela abavelisi ukuba bavelise amafoam asemgangathweni ophezulu aneempawu ezithile ezenzelwe usetyenziso olwahlukeneyo. Ukuqonda iimpawu kunye nemigaqo yokusebenzisa i-BDMAEE kunceda ekwenzeni ngcono inkqubo yokuvelisa ifoam, ukuqinisekisa ukusebenza okuphezulu kwiimveliso zokugqibela.